Finding the Fourth Proportional to 12,270.63, 18,401.88 and 3,948.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,270.63 : 18,401.88 = 3,948.69 : x
2. Step 2: Convert to fraction form
   12,270.63/18,401.88 = 3,948.69/x
3. Step 3: Cross multiply
   12,270.63x = 18,401.88 × 3,948.69
4. Step 4: Simplify right side
   12,270.63x = 72,663,319.54
5. Step 5: Solve for x
   x = 72,663,319.54/12,270.63
6. Step 6: Final answer
   x = 5,921.73